Simple and Effective
No fad diets or quick fixes here. All advice provided by 4thDiscipline is based on scientific evidence and 17+yrs of practical experience in working with athletes.
We are Athletes
As triathletes ourselves, we know that the best approach to sports nutrition is one that is practical and realistic with an active lifestyle.
Learn Anytime Online
Designed for busy people, learn everything from the fundamentals of fueling around training to the technicals of optimising hydration on race day, ANYTIME and ANYWHERE online.

Personal Nutrition Coaching
Join us for 1:1 performance nutrition coaching including weekly check-ins with Claire Fudge plus the benefit of body composition testing, advice on biometric tracking and nutritional analysis. This is the fastest most effective way to optimise your nutrition for sporting success.

Body Composition & Hydration Testing
"What is measured is managed". Track changes throughout your training cycles and season with body composition measurements to optimise your nutrition for your sports performance and wellbeing. Get a handle on your hydration with Sweat Sodium Testing.

Nutrition Courses
Learn the fundamentals of sports nutrition online with our go-to educational resource "Fuel Me: Fundamentals of Food for Triathlon". Designed to break down the complexities of nutrition into simple and actionable steps for triathletes.
Meet Our Athletes
LAURA
SIDDALL
GB PROFESSIONAL TRIATHLETE
Laura has a busy pro athlete lifestyle with frequent travel. Laura and Claire are working together to optimise injury recovery and optimising fuelling for sessions and day to day life.
MORGAN PEARSON
TOP RANKED USA TRIATHLETE
Morgan joined 4thDisicpline in 2020 to optimise his diet to aid his recovery and adaption to training and prepare for the Tokyo Olympics.
SABRINA STADELMANN
SWISS PROFESSIONAL TRIATHLETE
With a part time job and Ironman training, there is never a quiet moment for Sabrina! Claire and Sabrina have worked to optimise fueling for sessions and managing dietary intollerances.
ALYSHA
KRALL
PROFESSIONAL TRIATHLETE & COACH
Professional Ironman Triathlete and Certified USAT and Ironman Uni coach. Alysha has a taste for every sporting adventure!
Testimonials
"Nutrition and weight maintenance are highly individual. I spend time getting to know my clients, their background, their training regimens and lifestyle demands. My advice will always be guided by the latest science and research as well as over 17 years of ‘real-life’ experience working in dietetics too! Combining the two means I can find the sweet spot in nutrition for my clients (whether the textbook agrees or not!)"
Claire Fudge, Performance Nutritionist